Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/COST/proto.abc"

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 ]
filesizedescription
Tune-20458-CarolinesPolka_D.abc 1038 ABC music file with the extracted tune(s)
Tune-20458-CarolinesPolka_D.pdf 28532 Portable Data Format
Tune-20458-CarolinesPolka_D.ps 40496 PostScript
Tune-20458-CarolinesPolka_D.txt 1038 Plain-text file with the extracted tune(s)
Tune-20458-get.log 13595 Log file, useful mostly for debugging
Tune-20458-proto.abc 142 ABC music file with the extracted tune(s)
Tune-20458-proto.txt 142 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.